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Updated UI Knob control - enabled dragging outside target area 

Added example scene
pull/413/head
Simon (darkside) Jackson 2020-10-21 18:12:37 +01:00
parent 948d4fe62b
commit 9a0a08da78
2 changed files with 47 additions and 3 deletions
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2
Examples~

@ -1 +1 @@
Subproject commit a8ce2ee705be43c98db82e8307b5b4bf4801387e
Subproject commit 3e7049dfc36383e7e0e4c231c3a84ea50ead98c7

46
Runtime/Scripts/Controls/UI_Knob.cs
View File

@ -43,6 +43,10 @@ namespace UnityEngine.UI.Extensions
public bool snapToPosition = false;
[Tooltip("Number of positions to snap")]
public int snapStepsPerLoop = 10;
[Tooltip("Parent touch area to extend the know touch radius")]
public RectTransform ParentTouchMask;
[Tooltip("Default background color of the touch mask. Defaults as transparent")]
public Color MaskBackground = new Color(0, 0, 0, 0);
[Space(30)]
public KnobFloatValueEvent OnValueChanged;
private float _currentLoops = 0;
@ -59,6 +63,47 @@ namespace UnityEngine.UI.Extensions
_screenSpaceOverlay = GetComponentInParent<Canvas>().rootCanvas.renderMode == RenderMode.ScreenSpaceOverlay;
}
protected override void Start()
{
CheckForParentTouchMask();
}
private void CheckForParentTouchMask()
{
if (ParentTouchMask)
{
Image maskImage = ParentTouchMask.gameObject.GetOrAddComponent<Image>();
maskImage.color = MaskBackground;
EventTrigger trigger = ParentTouchMask.gameObject.GetOrAddComponent<EventTrigger>();
trigger.triggers.Clear();
//PointerDownEvent
EventTrigger.Entry pointerDownEntry = new EventTrigger.Entry();
pointerDownEntry.eventID = EventTriggerType.PointerDown;
pointerDownEntry.callback.AddListener((data) => { OnPointerDown((PointerEventData)data); });
trigger.triggers.Add(pointerDownEntry);
//PointerUpEvent
EventTrigger.Entry pointerUpEntry = new EventTrigger.Entry();
pointerUpEntry.eventID = EventTriggerType.PointerUp;
pointerUpEntry.callback.AddListener((data) => { OnPointerUp((PointerEventData)data); });
trigger.triggers.Add(pointerUpEntry);
//PointerEnterEvent
EventTrigger.Entry pointerEnterEntry = new EventTrigger.Entry();
pointerEnterEntry.eventID = EventTriggerType.PointerEnter;
pointerEnterEntry.callback.AddListener((data) => { OnPointerEnter((PointerEventData)data); });
trigger.triggers.Add(pointerEnterEntry);
//PointerExitEvent
EventTrigger.Entry pointerExitEntry = new EventTrigger.Entry();
pointerExitEntry.eventID = EventTriggerType.PointerExit;
pointerExitEntry.callback.AddListener((data) => { OnPointerExit((PointerEventData)data); });
trigger.triggers.Add(pointerExitEntry);
//DragEvent
EventTrigger.Entry dragEntry = new EventTrigger.Entry();
dragEntry.eventID = EventTriggerType.Drag;
dragEntry.callback.AddListener((data) => { OnDrag((PointerEventData)data); });
trigger.triggers.Add(dragEntry);
}
}
public override void OnPointerUp(PointerEventData eventData)
{
_canDrag = false;
@ -72,7 +117,6 @@ namespace UnityEngine.UI.Extensions
_canDrag = false;
}
public override void OnPointerDown(PointerEventData eventData)
{
_canDrag = true;